Noise (disambiguation)

Noise is a variety of sound, usually meaning any unwanted sound.

Noise may also refer to:

Random or unwanted signals

Acoustic noise

In transportation

• Aircraft noise
• Jet noise, caused by high-velocity jets and turbulent eddies
• Noise and vibration on maritime vessels
• Noise, vibration, and harshness, quality criteria for vehicles
• Traffic noise, including roadway noise and train noise

Other acoustic noise

• Noise (acoustic), technical term for any sound, even deliberate
• Noise (audio), a residual low level "hiss or hum"
• Artificial noise, in spectator sports
• Background noise, in acoustics, any sound other than the monitored one
• Comfort noise, used in telecommunications to fill silent gaps
• Grey noise, random noise with a psychoacoustic adjusted spectrum
• Industrial noise, relevant to hearing damage and industrial hygiene
• Noise pollution, that affects negatively the quality of life

Noise in biology

• Cellular noise, in biology, random variability between cells
• Developmental noise, variations among living beings with the same genome
• Neuronal noise, in neuroscience
• Synaptic noise, in neuroscience
• Transcriptional noise, in biochemistry, errors in genetic transcription

Noise in computer graphics

Noise in computer graphics refers to various pseudo-random functions used to create textures, including:

• Gradient noise, created by interpolation of a lattice of pseudorandom gradients
  • Perlin noise, a type of gradient noise developed in 1983
• Simplex noise, a method for constructing an n-dimensional noise function comparable to Perlin noise
• Simulation noise, a function that creates a divergence-free field
• Value noise, created by interpolation of a lattice of pseudorandom values; differs from gradient noise
• Wavelet noise, an alternative to Perlin noise which reduces problems of aliasing and detail loss
• Worley noise, a noise function introduced by Steven Worley in 1996

Noise in electronics and radio

• Noise (signal processing), various types of interference
  • Noise (electronics), related to electronic circuitry
    • Ground noise, appearing at the ground terminal of audio equipment
  • Image noise, related to digital photography
  • Noise (radio), interference related to radio signals
    • Atmospheric noise, radio noise caused by lightning
    • Cosmic noise, radio noise from outside the Earth's atmosphere
  • Noise (video), "snow" on video or television pictures

Noise in mathematics

• Any one of many statistical types or colors of noise, such as
  • White noise, which has constant power spectral density
  • Gaussian noise, with a probability density function equal to that of the normal distribution
  • Pink noise, with spectral density inversely proportional to frequency
  • Brownian noise or "brown" noise, with spectral density inversely proportional to the square of frequency
• Pseudorandom noise, in cryptography, artificial signal that can pass for random
• Statistical noise, a colloquialism for recognized amounts of unexplained variation in a sample
• Noise-based logic, where logic values are different stochastic processes
• Noise print, a statistical signature of ambient noise, used in its suppression

Other types of noise

• Noise (economic), relates to a theory of pricing developed by Fischer Black
• Communication noise, factors that impair human-to-human communication
• Electrochemical noise, electrical fluctuations in electrolysis, corrosion, etc.
• Internet background noise, data packets addressed to IP addresses or ports where there is no device to receive them
• Meta noise, irrelevant metadata in computer files
• Noise trader, in financial research, a stock trader that makes random decisions
• Phonon noise, in materials science
• Seismic noise, random tremors of the ground

Measures of noise intensity

• Noise figure, the ratio of the output noise power to attributable thermal noise
• Ambient noise level, the background sound pressure level at a given location
• Noise power, with several related meanings
• Noise spectral density, N_o measured in Watt/Hertz
• Noise temperature, temperature that would produce equivalent semiconductor noise

In arts and entertainment

In film and television

• Noise (2007 American film), a comedy-drama written and directed by Henry Bean
• Noise (2007 Australian film), a drama written and directed by Matthew Saville
• Noise (programming block), a Fuji TV late-night anime programming block
• The Noise (TV series), a 1996 magazine show on ITV
• New York Noise, an indie rock music video TV program by NYCTV, 2003-2009

In journalism and literature

• Noise (book), a 2006 popular science book by Bart Kosko
• NOiSE, a manga by Tsutomu Nihei
• The Noise, a monthly newspaper in Northern Arizona
• Noise: The Political Economy of Music, a 1977 nonfiction book by Jacques Attali

In music

• Noise in music, the occurrence of noise(s) in music, including noise reduction and uses in instrument tone, in composition and in performance
  • String noise, made by guitar players sliding the fingers over the strings

Musical styles

• Noise music, a noise-based aesthetic in experimental music and sound art
  • Power noise, a derivative of noise music
• Noise pop, an alternative rock genre developed in the UK in the mid-1980s
• Noise rock, a style of rock music prominent in the 1980s
  • Japanese noise rock

Musical recordings

• Noise (Archive album)
• Noise, an album by DecembeRadio
• "Noise" (song), a 2016 song by Kenny Chesney
• Le Noise, a 2010 album by Canadian musician Neil Young
• The Noise (album), a 1993 album by English singer Peter Hamill
• The Noise: Frejus, a live video by the band King Crimson

Other uses in music

• The Noise (band), Puerto Rican musical collective
• Noise Pop Festival, a indie rock festival started 1993 in San Francisco
• Noise Records, a German record label founded in 1983

Other uses in arts and entertainment

• Noise FM 876, a radio station in Australia
• Noise (company), a second-party video game developer for Nintendo

In sport

• Knoxville Noise, a basketball franchise in Knoxville, TN
• Nashville Noise, a basketball franchise in Nashville, TN

Other uses

• Noise (Goidelic mythology) or Naoise, a figure in Irish mythology
• The Noises, a set of privately owned islands northeast of Rakino Island, New Zealand

See also

• White noise (disambiguation)
• Father Pat Noise, a fictitious priest figuring in a Dublin hoax
• Noice (software), a GStreamer-based audio player by the Pantheon desktop environment written in Vala